The equation for the surface area of a cylinder is 2πr^2+2πrh.
we substitute our values of the radius and the height to find our answer.
so 2xπx5^2+2xπx5x10 = 471.238898m^2
I think it would be 11 because if it was 12 hours it would been way more then $1265. they are asking you for hours not minutes. I am pretty sure it would be 11. I hope this helped!
The unit rate is $2.20 for each pencil because 11 divided by 5 is 2.2
Answer:
78.75
Step-by-step explanation:
450 is increased by 75%
450 + 450*75%
Change to decimal form
450 +450*.75
450+337.5
787.5
Now decrease by 90%
787.5-787.5*90%
Change to decimal form
787.5-787.5*.9
787.5-708.75
78.75
Answer: Richter Scale
Step-by-step explanation: